Karaite-Rabbanite Ketubah (Fustāt, Egypt)

This ketubah formulary is noteworthy for its clauses that apply specifically to marriages between a Karaite woman and a Rabbanite man. He agrees to allow her to follow Karaite practices, including observing festivals according to the Karaite calendar, which followed “the sighting of the moon and the finding of the aviv in the land of Israel,” in other words, it was set by determining the beginning of the new month by observation of the new moon and the date for Passover by the state of the “aviv” (barley harvest) in Palestine. It specifies that if the husband does not permit his wife to adhere to Karaite practice, she has the right to request divorce at any time and with full payment of the mohar (bridal gift). The document attests to the marriages between these two communities despite significant differences in their religious observance.